Cypripedium parviflorumSalisb.

yellow lady's slipper

WFO wfo-0000935579 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Cypripedium parviflorum, photographed by Carter Dorscht
fig. a Carter Dorscht, CC0 1.0 / 2022-06-12 / obs. 205491637
Cypripedium parviflorum, photographed by webohms
fig. b webohms, CC BY 4.0 / obs. 204243643
Cypripedium parviflorum, photographed by Andrew Murray
fig. c Andrew Murray, CC BY 4.0 / obs. 201351337
Cypripedium parviflorum, photographed by Ken Sherlock
fig. d Ken Sherlock, CC0 1.0 / obs. 203484079
Cypripedium parviflorum, photographed by webohms
fig. e webohms, CC BY 4.0 / obs. 201952990
Cypripedium parviflorum, photographed by Derek
fig. f Derek, CC BY 4.0 / obs. 202977274
Cypripedium parviflorum, photographed by Margaret Northfield
fig. g Margaret Northfield, CC BY 4.0 / obs. 202033617
Cypripedium parviflorum, photographed by Bob
fig. h Bob, CC BY 4.0 / obs. 202264745

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Flowering n = 7,095 observations

Peak flowering in Jun, from 7,095 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 37 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Calceolus parviflorus (Salisb.) Nieuwl.
  • Criosanthes parviflora (Salisb.) Raf.
  • Cypripedium assurgens Raf.
  • Cypripedium aureum Raf.
  • Cypripedium bifidum Raf.
  • Cypripedium bulbosum var. flavescens (Redouté) Farw.
  • Cypripedium bulbosum var. parviflorum (Salisb.) Farw.
  • Cypripedium bulbosum var. pubescens (Willd.) Farw.
  • Cypripedium calceolus f. rupestre Vict. & J.Rousseau
  • Cypripedium calceolus subsp. parviflorum (Salisb.) Hultén
  • Cypripedium calceolus var. parviflorum (Salisb.) Fernald
  • Cypripedium calceolus var. planipetalum (Fernald) Vict. & J.Rousseau
  • Cypripedium calceolus var. planipetalum (Fernald) Vict. & J.Rousseau
  • Cypripedium calceolus var. pubescens (Willd.) Correll
  • Cypripedium flavescens Redouté
  • Cypripedium furcatum Raf.
  • Cypripedium hirutum var. parviflorum (Salisb.) Rolfe
  • Cypripedium luteum Aiton ex Raf.
  • Cypripedium luteum var. angustifolium Raf.
  • Cypripedium luteum var. biflorum Raf.
  • Cypripedium luteum var. concolor Raf.
  • Cypripedium luteum var. glabrum Raf.
  • Cypripedium luteum var. grandiflorum Raf.
  • Cypripedium luteum var. maculatum Raf.

and 13 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.